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by chwe
Tue Sep 29, 2020 4:36 pm
Forum: General discussion
Topic: Veracrypt performance benchmark: Pi4 VS 8-year-old Intel
Replies: 22
Views: 1404

Re: Veracrypt performance benchmark: Pi4 VS 8-year-old Intel

The Xeon is not exactly a desktop targeted CPU ;-) I know :roll: comparing the rpi to a 8y old server CPU might not be that fair due to server CPUs focused on crypto a way earlier. The broadcom packaged processors and bits can be used for other things, hence I picked one that seemed to be more serv...
by chwe
Mon Sep 28, 2020 12:59 pm
Forum: General discussion
Topic: Veracrypt performance benchmark: Pi4 VS 8-year-old Intel
Replies: 22
Views: 1404

Re: Veracrypt performance benchmark: Pi4 VS 8-year-old Intel

Don't forget the Pi4 uses a 2016 ARM, so only five years newer than your Sandy Bridge Xeon (assuming original, Xeon has stupid version numbering), so not 8 years. Also given the Pi processor will have been for a media player, set top box at the time, I doubt server encryption security was high on t...
by chwe
Fri Sep 18, 2020 1:27 pm
Forum: General discussion
Topic: Pi4 Sysbench results
Replies: 35
Views: 11063

Re: Pi4 Sysbench results

don't get me wrong the kinda 'academic discussion' about how certain code under certain architectures behave is indeed interesting and if it finally ends in better optimized algorithms instead of throwing bigger silicons at a random problem I'm more than happy (I'm a huge fan of optimization). The p...
by chwe
Fri Sep 18, 2020 11:03 am
Forum: General discussion
Topic: Pi4 Sysbench results
Replies: 35
Views: 11063

Re: Pi4 Sysbench results

Welcome to the surprising world of the Raspberry Pi 4B desktop replacement! And its trivially easy to overclock the Pi4 to 2.1GHz or more ... All for $35 so to summarize this thread we have a 'benchmarktool' which focuses on 64bit divisions throwing out numbers which heavily rely on compiler versio...
by chwe
Thu Sep 17, 2020 6:19 pm
Forum: General discussion
Topic: Why is Raspberry Pi OS based on debian?
Replies: 52
Views: 2651

Re: Why is Raspberry Pi OS based on debian?

now that Ubuntu is starting to handle vacuum cleaner usage and areas other than the desktop. that 'now' for vacuum cleaners happened somewhere 2016/17 with a ubuntu 14.04.. The reason for ubuntu/debian on arm was for sure not those few SBC boards sold.. but the huge embedded market you may wanna ha...
by chwe
Thu Sep 17, 2020 4:35 pm
Forum: General discussion
Topic: Why is Raspberry Pi OS based on debian?
Replies: 52
Views: 2651

Re: Why is Raspberry Pi OS based on debian?

sometimes look elsewhere helps to see something you didn't even consider... as long as time allows you should at least look into a few others. I can agree with that. But I have been round the block a few times with Linux distros since 1997. RedHat, Centos, Debian, Ubuntu, Gentoo... I have built my ...
by chwe
Thu Sep 17, 2020 3:03 pm
Forum: General discussion
Topic: Why is Raspberry Pi OS based on debian?
Replies: 52
Views: 2651

Re: Why is Raspberry Pi OS based on debian?

*ARMbian was similar to Raspbian but the developers stopped developing and dropped support completely. armbian did never support the raspberry pi. You may refer to a few scripts we use that do 'also work on raspberries' those were mostly to support third party distributions based on armbian (e.g. O...
by chwe
Fri Jul 31, 2020 3:24 pm
Forum: General discussion
Topic: RPi4 BCM2711 and ARMv8 Crypto Extensions?
Replies: 61
Views: 8358

Re: RPi4 BCM2711 and ARMv8 Crypto Extensions?

I’m not sure your level of experience, but cryptography isn’t just used in Bitcoin. It’s ubiquitous and pervasive throughout all modern software engineering. I wonder what percentage of the 32 million+ happy users are even aware that the crypto extension is missing? I think it's three. (people, not...
by chwe
Mon Jul 06, 2020 6:35 pm
Forum: General discussion
Topic: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.
Replies: 54
Views: 4746

Re: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.

I like those photographs--they remind me of outer space art. Maybe the originals could be framed and sold. Do you know what type of solder is used for each board and whether either is lead free? that was quick and dirty 'put it under the microscope, make 20 pictures on different high' and then stac...
by chwe
Mon Jul 06, 2020 2:55 pm
Forum: General discussion
Topic: Swap files on USB Thumb Drive
Replies: 3
Views: 209

Re: Swap files on USB Thumb Drive

I am using a Raspberry PI 3 B+. I would like to improve its performance. Is there a way to create swap files on a USB Thumb Drive to improve performance. Would ZRAM produce suficient results to create a higher performance?! Any suggestions on hardware accelaration for Chromium?! I wiped swap from a...
by chwe
Mon Jul 06, 2020 1:20 pm
Forum: General discussion
Topic: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.
Replies: 54
Views: 4746

Re: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.

I had a closer look at my RPi4 and I could not spot many solder balls on mine. But what is noticeable is that the solder joints for the sockets (especially USB3) look a bit blurry (maybe cold joint, I'm not an expert on this). See here in comparison RPi4 and NanoPi M4V2 which has IMO nice looking so...
by chwe
Thu Jul 02, 2020 12:09 pm
Forum: General discussion
Topic: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.
Replies: 54
Views: 4746

Re: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.

For example, compared to the 4GB Pi at $55 (shipping included) the 4GB Odroid C4 costs $50 plus shipping (about $70 total). Similarly, the 4GB FriendlyARM M4V2 lists at $70 (shipping is again extra). Then there's the 4GB Jetson Nano at $99. Though the corrosion on the solder looks like something th...
by chwe
Wed Jul 01, 2020 9:15 am
Forum: General discussion
Topic: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.
Replies: 54
Views: 4746

Re: Yesterday, another 3 Pi4Bs 2GB died within 2 hours. Now it's 5 out of 20 dead.

Is it correct, that the firmware has the ability to log to the serialport during bootup, but that functionality is disabled by default and now it cannot be enabled anymore because that would require a working Pi4B to update the eeprom? Would it make sense to enable this by default in the future so ...
by chwe
Sat May 02, 2020 11:54 am
Forum: General discussion
Topic: HDMI in and out with Picture in Picture
Replies: 6
Views: 390

Re: HDMI in and out with Picture in Picture

There is no HDMi Input on the Raspberry Pi SBC :? there are CSI to HDMI bridge chips and expansion boards which are compatible with the RPI CSI connector.. :shock: search for TC358743XBG on your favorite chinese supply. Tho, I've no idea how well it will perform, I would assume th RPis 2 lane mipi ...
by chwe
Wed Mar 11, 2020 12:59 pm
Forum: General discussion
Topic: RPi Benchmarks: 32- Vs 64-bits article on HaD
Replies: 59
Views: 4510

Re: RPi Benchmarks: 32- Vs 64-bits article on HaD

jamesh is right there. In the software world if you change one little, teeny, weeny thing, all kind of stuff that depends on that breaks. That cascades into endless questions here and elsewhere as to why X or Y or Z no longer works. See Stackoverlow or any support forum anywhere to see that in acti...
by chwe
Tue Mar 10, 2020 2:59 pm
Forum: General discussion
Topic: RPi Benchmarks: 32- Vs 64-bits article on HaD
Replies: 59
Views: 4510

Re: RPi Benchmarks: 32- Vs 64-bits article on HaD

@chwe Well then. You seem to know how to maintain images and make sure the packages on the repos work. Make us a fully working 64 bit, Debian based Raspbian image and make sure it's as stable as the official one ;) why should I? :lol: I am already a spare time 'linux on armboards' maintainer.. most...
by chwe
Tue Mar 10, 2020 8:50 am
Forum: General discussion
Topic: RPi Benchmarks: 32- Vs 64-bits article on HaD
Replies: 59
Views: 4510

Re: RPi Benchmarks: 32- Vs 64-bits article on HaD

@chwe Well then. You seem to know how to maintain images and make sure the packages on the repos work. Make us a fully working 64 bit, Debian based Raspbian image and make sure it's as stable as the official one ;) why should I? :lol: I am already a spare time 'linux on armboards' maintainer.. most...
by chwe
Sat Mar 07, 2020 8:43 pm
Forum: General discussion
Topic: RPi Benchmarks: 32- Vs 64-bits article on HaD
Replies: 59
Views: 4510

Re: RPi Benchmarks: 32- Vs 64-bits article on HaD

why? you simply can deliver 2 images, one 32bit supporting everything and one image 64bit supporting RPi3 upwards It's not just a case of two images. There's also the tens of thousands of packages in the repositories to build and take up storage on all the mirrors around the world. Plus other reaso...
by chwe
Fri Mar 06, 2020 6:34 pm
Forum: General discussion
Topic: RPi Benchmarks: 32- Vs 64-bits article on HaD
Replies: 59
Views: 4510

Re: RPi Benchmarks: 32- Vs 64-bits article on HaD

Why use a 64-bit OS on your Raspberry Pi 4 ? Because performance is better than 32-bit, says Red Hat employee : https://raspberry-pi.developpez.com/actu/295506/Pourquoi-user-d-un-OS-64-bits-sur-son-Raspberry-Pi-4-Parce-que-la-performance-est-meilleure-qu-en-32-bits-d-apres-un-employe-de-Red-Hat-qui...
by chwe
Sat Feb 29, 2020 7:24 pm
Forum: General discussion
Topic: Cardboard case for raspberry pi 4 b
Replies: 15
Views: 1120

Re: Cardboard case for raspberry pi 4 b

why not simple take the cardbox your RPi was delivered in, take it apart and you've a perfect 'blueprint' how your case should look like? #rocket-science This cardbox with two holes for USB-C and ethernet is the hosing for my RPi since I got it a few months ago, but I must admit the RPi was delivere...
by chwe
Fri Feb 28, 2020 11:14 pm
Forum: General discussion
Topic: Raspberry Pi 5 with PCIe NVMe M.2
Replies: 14
Views: 6592

Re: Raspberry Pi 5 with PCIe NVMe M.2

Have you seen what people have been able to do once mPCIe has been added to a Pi?: https://www.tindie.com/products/m2m/diy-kit-pcb-rak833-raspberry-hat-lorawan-gateway/ This is a Full 8-ch LoRa Concentrator (Network Gateway) using the pins on PCIe to do SPI communication between the FPGA and the Pi...
by chwe
Fri Feb 28, 2020 10:39 pm
Forum: General discussion
Topic: Raspberry Pi 5 with PCIe NVMe M.2
Replies: 14
Views: 6592

Re: Raspberry Pi 5 with PCIe NVMe M.2

If your really need PCIe NVMe M.2 on a Pi like SBC you can have it today: https://www.nvidia.com/en-us/autonomous-machines/embedded-systems/jetson-nano/ It will cost you 3 or 4 times more, need a bigger PSU and is somewhat larger itself. That socket has to go somewhere. Altogether a different produ...
by chwe
Mon Feb 24, 2020 11:17 pm
Forum: General discussion
Topic: Wide angle camera module picture quality questionable.
Replies: 8
Views: 587

Re: Wide angle camera module picture quality questionable.

There is no wide angle official camera. Although I own officials cameras, I have to buy chinese variants because they have a lens mount with a lot of choice. There are third party wide angle variants from Pimoroni/Pi hut also. It is possible to buy an M12 plastic lens housing that can be mounted ov...
by chwe
Mon Feb 24, 2020 10:22 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 69802

Re: New Pi 4B v1.2?

Most release full schematics of their boards which makes it possible to figure out stuff on your own when needed (mostly interesting for power trees). And just now many units have these other manufacturers sold ? The market has spoken and it doesn't support your thesis ! :lol: PeterO ah we go for t...
by chwe
Mon Feb 24, 2020 8:24 pm
Forum: General discussion
Topic: New Pi 4B v1.2?
Replies: 331
Views: 69802

Re: New Pi 4B v1.2?

Really? Most companies out there selling SBC's are notorious by their inability to fix things or support their product. We actually fixed this as fast as the supply chain allowed - as soon as the issue was identified the PCB was redesigned - within just a couple of days. Then it all needed to be pr...

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